Specifications
Chapter 4 - Operation and Administration Menus and Parameters
BreezeACCESS 4900 123 System Manual
Available values: 1 to 3600 seconds.
Default value: 30 seconds.
4.2.6.2.7.3.5 ATPC Power Level Step
The ATPC Power Level Step parameter defines the step size to be used by the SUs
for incrementing/decrementing the Current Transmit Power after receiving a
power-up/power-down message. If the distance between the value of the Current
Transmit Power and the desired range is smaller than the step size, the
power-up/power-down message will include the specific step value required for
this condition.
Valid range: 1-20 (dB)
Default value: 5 (dB)
4.2.6.2.7.4 ATPC Parameters in SU
4.2.6.2.7.4.1 ATPC Option
The ATPC Option enables or disables the Automatic Transmit Power Control
(ATPC) algorithm. The parameter takes effect immediately. However, when
changed from Enable to Disable, the transmit power level will remain at the last
Current Transmit Power determined by the ATPC algorithm before it was disabled.
It will change to the value configured for the Initial Transmit Power parameter
only after the next reset or following loss of synchronization.
The default is Enable.
4.2.6.2.7.5 Tx Control (AU only)
The Tx Control option enables turning Off/On the AU's transmitter, or having the
the AU Tx status controlled by the status of the Ethernet port/link.
If the selected option is Ethernet Status Control, then:
If the Ethernet link is down, the AU transmitter will be switched to Off.
If the Ethernet link is up, the AU transmitter will be switched to On.
NOTE
The accuracy of the Transmit Power level is typically +/- 1 dB. However, at levels that are 15 dB or
more below the maximum supported by the hardware, the accuracy is +/- 3 dB (for information on
hardware limitations refer to the Country Codes document). At these levels the use of ATPC may
cause significant fluctuations in the power level of the transmitted signal. When operating at such
low levels, it is recommended to disable the ATPC Option and to set the Transmit Power parameter
to the average Tx Power level before the ATPC was disabled.